Xin chao! My girlfriend and I have been to Vietnam a few times and never saw any sport bikes. We stayed with family in the Cho lon district in HMC, and rode around on scooters visiting Danang, Vung Tau, etc. The biggest bike I ever saw was a 500cc cruiser (maybe an old Nighthawk?) and it looked like a giant among all the scooters. Seeing all of you guys riding your full size bikes makes me want to move there even more!